Espresso coffee machine



FIG. 1 is a frontal perspective view of an espresso coffee machine showing my new design;

FIG. 2 is a rear perspective view;

FIG. 3 is a left side elevational view; and,

FIG. 4 is a right side elevational view; and,

FIG. 5 is a top perspective view thereof. 

The ornamental design for an espresso coffee machine, as shown and described. 